Soo I bought an Mp7 and I was gunna remove the flash hider and I noticed the flash hider was metal? Usually I'd heat up a knife and just cut it off but...it's metal? Now of course of my stupidity I tried forcing it off and the front end of the birdcage snapped off?!! Is there any way I can take this off? Without disassembling it? Or is that the only option? Can I heat it up with a blow dryer and just wrench it off?

Yes you can get it off. Technically, you should disassemble it first, but KWA glues down the rail on top of the gun now, so I'm pretty sure you can't take it down with the flash hider still attached.

Sooooo, yes, heat it up with a blow dryer, and get a wrench that will fit it, and screw it off. Get it very hot, you could even use a heat gun if you want as long as you make sure you don't melt the polymer which is quite close to it. I wouldn't use the heat gun for this, especially because the inner barrel is there too. I would only use a heat gun if I were working on my SR10 and I had already removed the inner barrel. You will wrench the outer barrel of the MP7 loose if you don't heat it enough, but don't be afraid to turn it pretty hard. Just be careful.

I used a heat gun. Heated till it was warm to the touch. Then using a wrench it came right off. I would pull it off a few rotations, then put it back on, then off a few rotations , then so on till it was off. Just so the glue didnt bind up. I wound up pulling mine off to install an adapter so i can run a suppressor, or amplifier.

*** Disclaimer: The following procedure is only recommended for MP7s that have the orange tip, that will be deployed in countries that don't require it. ***

1. remove front receiver cover (so that you don't melt/damage it). This requires removing the top rail in order to get at the top push tab (there is a bottom one too). Depending on the operating manual versions that are on the web, this is either part 2 or 3. (I broke one of the plastic tabs of this cover while trying to remove it, and had to order a replacement. So, be gentle and only press each tab in as much as is required to remove the cover - the plastic seems to be quite brittle.)

2. using a propane torch, apply heat to the thread area for about 10-15 seconds (at most). Rotate the torch or gun to ensure fairly even heating around the flash hider thread area, taking care to only heat the thread area. The idea is to heat up the thread locking compound, not the gun parts. In my case, this slightly bubbled the orange paint on the original hider...

3, using a 10mm wrench that you've already put into place on the flat sides of the hider before applying heat, turn counterclockwise to break the glue "seal". In my case this did not require much force. I think I saw mention of a 12mm wrench here -- on my MP7, it's a 10mm fitting.

I was pretty apprehensive about this process, but other than breaking the cover's tab (!@#$$!!!) it was pretty easy.